.45 GAP
| .45 GAP | ||||||||||||||||||||
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A .45 GAP cartridge. | ||||||||||||||||||||
| Type | Pistol | |||||||||||||||||||
| Place of origin | Austria United States | |||||||||||||||||||
| Service history | ||||||||||||||||||||
| In service | 2003–present | |||||||||||||||||||
| Production history | ||||||||||||||||||||
| Designer | Ernest Durham | |||||||||||||||||||
| Designed | November 2002 | |||||||||||||||||||
| Manufacturer | CCI/Speer | |||||||||||||||||||
| Produced | 2003–present | |||||||||||||||||||
| Specifications | ||||||||||||||||||||
| Case type | Rebated, straight walled | |||||||||||||||||||
| Bullet diameter | 11.48 mm (0.452 in) | |||||||||||||||||||
| Case length | 19.18 mm (0.755 in) | |||||||||||||||||||
| Overall length | 27.18 mm (1.070 in) | |||||||||||||||||||
| Primer type | Small pistol | |||||||||||||||||||
| Maximum pressure (CIP) | 138 MPa (20,000 psi) | |||||||||||||||||||
| Maximum pressure (SAAMI) | 160 MPa (23,000 psi) | |||||||||||||||||||
| Ballistic performance | ||||||||||||||||||||
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| Test barrel length: 4.49 in Source: DoubleTap Ammo | ||||||||||||||||||||
The .45 GAP (Glock Auto Pistol) or .45 Glock (11.43×19mmRB) is a pistol cartridge designed by Ernest Durham, an engineer with CCI/Speer, at the request of firearms manufacturer Glock to provide a cartridge that would equal the power of the .45 ACP, have a stronger case head to reduce the possibility of case neck blowouts, and be shorter to fit in a more compact handgun. The .45 GAP is the first commercially introduced cartridge that has been identified with Glock.